<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        div {
            position: relative;
            width: 1750px;
            height: 2000px;
            /* background-image: url("./img/map.jpg"); */
        }
        
        div img {
            width: 1750px;
            height: 2000px;
        }
        
        .mask {
            position: absolute;
            top: 0;
            left: 0;
            width: 1750px;
            height: 1850px;
            background-color: rgba(0, 0, 0, 0.8);
        }
        
        .beijing {
            position: absolute;
            top: 540px;
            left: 1225px;
            background-color: #0099ff;
            height: 15px;
            width: 15px;
            /* border: 1px solid black; */
            border-radius: 50%;
            font-size: 20px;
            text-align: center;
            line-height: 40px;
        }
        
        .beijing div[class^="pluse"] {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 15px;
            height: 15px;
            box-shadow: 0 0 12px #009dfd;
            border-radius: 50%;
            animation: pluse 1.2s linear infinite;
        }
        
        .pluse2 {
            animation-delay: 0.4s !important;
        }
        
        .pluse3 {
            animation-delay: 0.8s !important;
        }
        
        .taiwan {
            position: absolute;
            top: 1020px;
            left: 1435px;
            background-color: #0099ff;
            height: 15px;
            width: 15px;
            /* border: 1px solid black; */
            border-radius: 50%;
            font-size: 20px;
            text-align: center;
            line-height: 40px;
        }
        
        .taiwan div[class^='pluse'] {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 15px;
            height: 15px;
            box-shadow: 0 0 12px #009dfd;
            border-radius: 50%;
            /* 匀速 */
            animation: pluse 1.2s linear infinite;
        }
        
        @keyframes pluse {
            0% {}
            70% {
                width: 50px;
                height: 50px;
                opacity: 1;
            }
            100% {
                width: 75px;
                height: 75px;
                opacity: 0;
            }
        }
        
        .timeline {
            overflow: hidden;
            width: 0;
            height: 20px;
            background-color: red;
            animation: w 4s steps(10) forwards infinite;
            margin-bottom: 200px;
            font-size: 20px;
            line-height: 20px;
            white-space: nowrap;
        }
        
        @keyframes w {
            0% {
                width: 0;
            }
            100% {
                width: 200px;
            }
        }
    </style>
</head>

<body>
    <div>
        <img src="./img/map.jpg" alt="">
        <div class="mask">

        </div>
        <div class="beijing">
            <div class="pluse1"></div>
            <div class="pluse2"></div>
            <div class="pluse3"></div>
        </div>
        <div class="taiwan">
            <div class="pluse1"></div>
            <div class="pluse2"></div>
            <div class="pluse3"></div>
        </div>
    </div>
    <div class="timeline">
        我是一个无情的打字机
    </div>
</body>

</html>